After clicking on WP Author Box Pro, you can view this dashboard and click on Authors.
Here, click the “Add New” button to add a new author. You can SYNC the old authors that you have managed by WordPress. When you click on the SYNC button then all the authors will import here that you created previously from default WordPress. And after that you can customise or edit the authors information from here.
Enter the information accordingly into the input fields.
Click on Save. Your New Author is ready. On the Edit button, you can customise your author information.